According to the official website and product description of Tongnian Technology, the anti-aging products of Tongnian Technology have been verified by strict scientific research and clinical trials, and meet the relevant safety standards and regulations. This product adopts advanced biotechnology and natural plant extracts, contains no harmful substances and chemical components, and has no toxic and side effects on human body. In addition, the anti-aging products of Tongnian Technology have also been certified by relevant institutions, which proves their safety and effectiveness. Therefore, it is safe to resist aging through science and technology.